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802.11ai – Improving WLAN System Performance

802.11ai – Improving WLAN System Performance. Date: 2013-11-06. Authors:. Agenda. Introduction to IEEE802.11ai, FILS Key use case for 11ai 802.11ai features in details Trial report of the FILS feasibility study Current status of IEEE802.11ai Note:

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802.11ai – Improving WLAN System Performance

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  1. Hiroshi Mano (ATRD) 802.11ai – Improving WLAN System Performance Date: 2013-11-06 Authors:

  2. Hiroshi Mano (ATRD) Agenda • Introduction to IEEE802.11ai, FILS • Key use case for 11ai • 802.11ai features in details • Trial report of the FILS feasibility study • Current status of IEEE802.11ai • Note: • This presentation has not been approved by IEEE802.11ai task group as an official overview document. It has been proposed by the authors based on the approved submissions as of Nov 2013.

  3. Hiroshi Mano (ATRD) Introduction to TGai: Fast Initial Link Setup (FILS) • FILS includes all operations required to expedite IP packets exchange during initial link setup. The main operations include: • Network and BSS discovery • Authentication and association • Higher layer setup such as IP address configuration • FILS focuses on an environment where mobile users are constantly entering and leaving the coverage area of an extended service set (ESS). Every time the mobile device enters an ESS, the mobile device has to do an initial link set-up. This requires efficient mechanisms that: • (a) scale with a high number of users simultaneously entering an ESS • (b) minimize the time spent within the initial link set-up phase • (c) securely provide initial authentication.

  4. Hiroshi Mano (ATRD) Today’s Market Trends • Growth of mobile device market – Majority of the Wi-Fi devices are mobile devices • True mobile usage: Users frequently pass through (isolated) hot spots while on the move • The dwell time of an user within a cell is short • Isolated hot spots cause frequent initial association /authentication (link setup) • New application’s request (Twitter, Facebook…) • Push Notification Service • Short and quick updates • High bandwidth • Very SMALL CELL of each AP • So even with short dwell time under a given AP, always-on connectivity is a must

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